Searching ".ace" sequences

Is there a way of searching the acedb/aatdb... sequences "a la GCG's
findpatterns"?
Is there a mechanism for creating a set of those database sequences that
match (accordingly to a given mistmatch value) a provided short pattern?
If not present, we migth try to develop such a mechanism. Any suggestions
or guidelines are welcomed.
Dr Jaime Prilusky, Head
Bioinformatics Unit ! LSPRILUS at WEIZMANN.WEIZMANN.AC.IL
Weizmann Institute of Science ! fax: 972-8-344113
76100 Rehovot - Israel ! tel: 972-8-343456